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http://dx.doi.org/10.5762/KAIS.2018.19.11.230

A Analytical Study on Seismic Performance of Stainless Water Tank using Lead Rubber Bearing  

Kim, Hu-Seung (Department of Civil Engineering, University of Seoul)
Oh, Ju (Korean Intellectual Property Office)
Jung, Hie-Young (Department of Civil Engineering, University of Seoul)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.19, no.11, 2018 , pp. 230-236 More about this Journal
Abstract
Earthquakes over 5.0 on the Richter scale have recently occurred in Korea, which has led to interest in the seismic safety of structures. If a water storage facility is damaged by an earthquake, the water could leak, and the insufficient water would make fire suppression difficult. Therefore, a water storage facility should satisfy safety requirements for earthquakes. In this study, the seismic performance of a water tank was improved by installing a lead rubber bearing between the foundation and the tank. It designed the lead rubber bearing available to the existed concrete foundation. ANSYS was used for modeling to consider the interaction between the fluid and structure of the tank and the hydrostatic and hydrodynamic pressure using four seismic waves. In the case of hydrostatic pressure at 2.5 water level, full level, the same stress appeared irrespective of whether the seismic isolation was installed. When hydrostatic pressure and hydrodynamic pressures are applied at the same time, the seismic-isolated water tank showed less seismic force, and the damping ratio was lower than that of general seismic isolation. This occurred because the weight of the water tank is much smaller than the stiffness of the seismic isolation. The result is expected to be used for further research on seismic capacity evaluation for water tanks.
Keywords
Finite Element Analysis; Fluid-Structure Interaction; Isolator; Lead Rubber Bearing; Stainless Water Tank; Seismic Performance;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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